Carbureter.



H. B. WYMAN.

GARBURETBR.

APPLICATION FILEI? APR. 4, 1914.

1,1 33,904. Patented Mar. 30, 1915.

1 vvtmeooao 5 Q16 B m 325 nonacn or. minimums, unumsora. I

' mmm To all whofitrit may 1 V Be it known that I, :Ho'nacn :B. WIMAN, a citizen of'the ,United States; residing at Minneapolis, in the county of Hennepin and A further object of the invention is to State 'of Minnesota," have invented certain new and useful Improvements in Carbureters, of which the following is a spec1fica- My invention relates to improvements in carbureters, for use-in connection with internal combustion engines, and has particular reference to a carb'ureter designed to maintain constant the relative volumes of air and gasolene ,or the like, independently. of the change of the load upon'the engine. j

An important object of the invention is to provide a carbureter of the above mentioned character, which is of simple construction, inexpensive to manufacture, and is automatic in operation.

provide means for maintaining the relative volumes of air and gasolene or the like constant, such means dischargingjhe air and gasolene or the like mto' roxlmlty to each other so that-they will ecomethor- 7 oughly mixed.

further objectof the invention is to provide a "carbureter of the above mentioned character designed -'-to maintain constant the relative volumes of air and gasolene or the like, and having adjustable means to per manentlyvary the relative volumes of air and gasolene or the like. Y

Other objects and advantages" of the invention will be apparent during the course of the following description; l In the accompanying drawings forming a part of this specification and in which like numerals are employed todesignat'e like parts throughout the same, Fi re 1 is a side elevation of a carbureter em odying my invention. Fig. 2 is a central lon' 'tudinal sectional'view through the same, ig. 3 is a horizontal sectional-view taken on line 33 of Fig. 2, Figf is a similar view taken on line 44 of'Fig. 2, and, Fig. 5 is an enlarged detail section through the gas outlet valve structure.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the un e -e110 desige nates a main carbureting shell or chamber .of'the carburetor, which is preferablyyertically arranged and provided upon one side thereof and near its upper end with-an outp y- Specification of Letters Patent. 5 Application mea'a rm, 1914. was... 829,514;

Patented Mar. 30,1915.

let passageor port 11, to be connected with the cylinder. orcylinders of an internal combustion en ine, whereby the 'carbureted I air is sucked rom' the'shell 10, during the operation of the engine, as is customary.

Mounted within the port or passage 11 is a. valve 12, preferably of the butterfly type, the same bein rigidly mounted upon a rock-shaft 13, OurnaIed throu h the wall of the port or passage 11 an extending outwardly beyond the same.

Secured to the outer end of'the rock-shaft 13, exteriorly ofthe shell 10, is a crank 14, adapted to be moved by any suitable means. Arranged below the lower open end of the shell or chamber 10 is a tubular portion or sleeve 15, securedthereto, as shown at 16, such union being air-tight,'as is obvious. As more clearly shown in Figs. 2 and 4,

the tubular portion 15 is provided with a i diametrically arranged web or member 17 preferably cast integral therewith, :3. tion 18 of the same" bein tubular. and extending outwardly beyond the tubular portion 15,- as shown at 19,; for connection with a fuel su ply pipe, containing gasolene,

kerosene Oil, or the like. The supply tube 18, at its inner end, is in free communication with a vertical fuel discharge tube or element 20, arranged within the shell 10 and tubular portion 15, preferably in spaced concentric relation thereto. The amount of the fuel, such as gasolene or kerosene oil, passing through the discharge tube 20, may

be'permanently regulated by means of an' adjusting valve 21, the ointed end of which is ada ted'to engage an disengage the lower end of the fuel 'dischargetube 20, as shown.

As more clearly shown in Fig. 5, the fuel discharge tube 20v is provided at its upper end wit is frusto conical in vertical cross-section and increases in diameter u wardly. At its obvious from FIg. 5. y

" The stem '25 has its upper end mounted to por-.

1 an enlarged counter-bore 22, which reciprocate throughan opening 27, and is provided with an upstanding extension 28,-

extending thr'ciu'gh a tubular housing 29; Surrounding the extension 28 and engaging the upper end of the stem 25 is:acompressible coil spring 30, the upper end of which is arranged within and engages an adjusting cap 31, having screw-threaded engagement with the tubular housing 29, as shown. The function of the spring 3Q. is to ur e the. valve 24 toward its seat, the tension 0' the spring being adjusted by, manipulation of the cap 31... The stem 25 is provided with'a screw- 1 threaded. portion 32 engaged by. an "interscrew-threaded sleeve 33;, having-pivdtalconnection with a link 34,-.the upper end of.;wl;1ich ispi etauy' connected with t a vertically swinging lever 35, pitotalliy supported, between,-its ends; as shown a 36. The up" erend'of the lever, .35 is'connected with a link 37, pivotally conneete'd with a suction actuated 'plunger"3 8,1 mounted to reciprocate within an outwardly extending cylinder 39, tormed'u on theshell 1Q, as shown. .The

perfeini of the'cylinder '39 is preferabl gibsed by an aprtured'pap40, as shown. t is thus that'uponthe increase of suction or vacuum within the shell 1Q, the, plunger 38 will be drawn inwardly, lever '35 swung in one direction to raise thelower end thereof, whereby stem 25 willbe elevated and valve "24 moved awayirom its sat,fin op esition to the spring 3Q. Having "screw-t i'eade d' engagement with the lower screw threaded portion 32 is a control tube 4 1,.extending downwardly beyond theshank 2 6: for a substantial distance and receiving the fueldischarge tube, 20, as shown. Adjacent the shank26 the control tube 41 ."-is provided with apertures 42, adapted to moved above the upper end of the discharge tube 20,u p"on the upward movement of the stem 25. he size and number ofthese apertures 42 areproportioned to maintain constant the relative volume of gasolene and, air, the means for controlling'the supply of'airbei sv a n e @Ptwardly 9 a tadia n these apertures. M

The means for controlling the passa'e of the air into the shell or chamber 10, suc air passing inwardl throu h the lower end of the tubular portlon 15, t rough passages43, (see Fig. 4), comprises a plurality ofJ'ertically swinging valve-plates or elements 44, which are substantially triangular, normally inclined, and decrease in width 11 wardly. At their lower or outer ends t e valve-plates 44 are hinged to the tubular portion 15, as shown at 45 and the same are provided at their upper ,or inner ends with curved recesses 46, formin a cylindrical opening to receive the contro tube .41. This opening, when the valve-plates 44 are closed,

is slightly larger in diameter than thetube 41, providing a contracted permanent .passage for the air. Dependingfrom the valveplates' 44 are cranks 47,, rigidly connected I rovide electrical means to .liat the *liquid uel before the same is discharged from the tube 2(l',"coinprising a heating coil 49 surrounding the lower portion of-the tube 20, assho wn in Fig. '2. A'heating' coil 50 is also arranged within the lower-end of the tubular portion 15, for the purpose of heatin the air passing therein. The heating co S 49 and 50 are prefierably 'connected in 'serieshy'alwiife 51, the'coil 49 being con-' n'ctd with one pole of a source of current not shownflbya wire 52 while the heating coil 50 is connectedwith the opposite pole of ,tlie'source of current by a wire 53. a a, The o pfiration of the carbureter is as folplet'elyppened,'and the engine-started. The operation ,of the engine creates a. suction within the shell 10, whereby upon :the increase of this suctionor vacuum, due te the increase of, the load upon the en 'e orfthe like,the plunger. 38 willbe. moved i iiwardly, whereby the stem 25 will beielevated This movement of the stem 25 moves the valve 24 farther away from its,seat and alsoelevates the control tube. 41 whereby an increased 42 are arranged number of the openin' above the upperend o the discharge tube 20. An. increased amount ofliquid fuel is accordingly supplied through theapertures 42 into.:the .shell:;1(l.., A proportional increase in the supply "of air is also obtained, as, upon the upward movement. ofthe tub'e 41 the valve-plates44 areswung upwardly,

increasing the'size of the airopening at 46.

Particular attention is called-to the fact that by using the valve-plates 44 arranged in the annular row around the control tube '41, sueh alve-platesbeing, also inclined, the air is deflected inwardly and upwardly,'. and made to travel in proximity to the exterior of the apertures 42, to become intimately mixed with the liquid fuel.

. It is to be understood that the form of my inventionherewith shown and described is to betaken as a preferred example of the same, and thatvarious changes in the shape,

. size and arrangement of parts ma be resorted to without departing from't e spirit of the'invention or the scope of the subim d m :1

Having described my invention, I claim 1. In a carbureter of the character described, a carbureting shell, a liquid'fuel supply tube extending axially within the carbureting shell, a. plurality of vertically fswinging valve plates arranged within the a e fimg S ndjs rmnn ingth liquid fuel supply, whole-con ol the passage.

e valve 12 is partially-or comair through the carbureting shell in proxim-- ity to the supply tube, a perforated tube slidably mounted upon the supply tube to move longitudinally thereof and extending u wardly beyond the outlet end ofthe sup.- p y tube, connecting means between the valve plates and the perforated tube whereby upon the upward swinging movement of the valve plates the perforated tube is simultaneously moved upwardly, a valve con nected with and extending into the upper end of theperforated tube to engage and disengage the upper end of the supply tube, and suction operated means connected with the valve to automatically move the same.

2. In a carbureter of the character described, a carbureting shell, a liquid fuel supply tube extending axially wlthin the carbureting shell, a plurality of vertically swinging valve 7 carbureting shel and surrounding the supply tube to control the passage of air through the carbureting shell in proximity to the supply tube, a perforated tube slidably mounted upon the supply tube to move longitudinally thereof and extending upwardly upper outlet end of the supply tube with its upper end internally screw-threaded, operative connecting means between the valve plates and thelperforated tube, a valve hav- 1ng its lower end screw-threaded to on age within the upper screw-threaded end 0 the perforated tube to on age and disengage the outlet end of the supp y tube, a spring to'oppose the upward movement of the valve, a pressure operated device arranged within' the shell above'the valve plates, a pivoted lever,

means connecting the pivoted lever with the pressure operated device, and means connecting the pivoted leverwith the valve.

4 4. In a carbureter of the character deplates arranged within the beyond the outlet end of the-supply tube,

cranks connected with and dependlngfrom the valve plates, links arranged below the valve plates and ,connectingthe cranks and the perforated tube, a valve connected with the perforated tube and extending therein for a substantial distance to :engage and disengage the upper end of the supply tube, a suction operated device, and connecting means between the suction operated device and the valve. I

3. A carbureter of the character described, a carbureting shell, a liquid fuel supply tube extending axially within the carbureting shell, a plurality of vertically swinging valve plates arranged within the carbureting shell and surrounding theliquid fuel supply tube to control the passage of air through the carbureting shell in proximityj'to the vsupply tube, a perforated tube slidably mounted upon the supply tube to move longitudinally thereof and extending upwardly beyond the scribed, a carbureting shell, 9. liquid fuel suppl tube extending into the same, a valve mova le toward and away from the outlet end of the liquid fuel. tube, a perforated control tube connected with the said valve for movement therewith and receiving the liquid fuel supply tube therein, and a valve arranged within the carbureting shell and formed of a plurality of swinging valve plates connected with the said valve to be moved upon the movement thereof and means to move the said valve.

5. In a carbureter of the character described, a carbureting shell, a liquid fuel suppl tube extending into the same, a valve mova 1e toward and away from the outlet end of the tube, a perforatedcontrol tube connected with the valve to move therewith and receiving the tube therein, a plurality of vertically swinging valve-plates arranged within the mixing shell and surrounding the perforated control tube, operative connecting means between the valve-plates and the control tube, and suction operated means connected with the liquidfuel supply valve to move the same.

HORACE BARTLETT WYMAIL Witnesses:

Fnnn. A. Coons, CLAIRE M. WYM'AN. 

